Equivalent FEM Meshes from Axisymmetric (AXID) to Three (3D) Dimensions Applied to Tunnels in Clay

Equihua-Anguiano, Luisa N.; Rubio-Saldaña, Iván; Orozco-Calderón, Marcos; Arreygue-Rocha, Eleazar; Chávez-Negrete, Carlos

doi:10.1007/978-3-319-95774-6_2

Cited by 1 publication

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this methodology, a circular section was first selected, and then the results were compared against axisymmetric (AX) conditions and 3D dimensions. From equivalent meshes (Equihua-Anguiano et al, 2018) obtained from the comparisons made between the models in 2D and 3D, it was possible to obtain results for different tunnel sections, using equivalent area criteria proposed from the circular original section (RT). The construction process of the displacement graphs was iterative.…”

Section: Methodology and Applicationmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of Tunnel Elastic and Elasto-Plastic Deformations with Approximations Obtained from 3D-FEM Simulations

Equihua-Anguiano,

Álvarez-Cornejo,

Concha-Sánchez

2023

Ing. Inv.

View full text Add to dashboard Cite

Nowadays, there are computer tools designed to simulate engineering problems. Numerical simulations in three dimensions (3D) are the closest to reality, but they require a significant amount of time and experience. In this paper, the aim is to present formulae and graphs obtained from numerical simulations using the finite element method (FEM). Their application decreases the time required to obtain deformations in the periphery of different tunnel sections and further serves to evaluate them for different excavation lengths in the face of unexpected geotechnical changes during drilling. Using the RS2 and RS3 software, 3D analyses were carried out according to the Mohr-Coulomb (MC) model, considering elastic and elasto-plastic perfect behaviors as well as isotropic and anisotropic conditions. The graphs presented herein allow obtaining displacements from an axisymmetric model to infer the 3D displacements horseshoe tunnels, and the polynomial expressions aid in determining the displacements of an established excavation length. Finally, comparisons between the displacements reported by other authors and those obtained with the polynomial expressions are presented as a means of validation for this research.

show abstract

Section: Methodology and Applicationmentioning

confidence: 99%

“…Soil radial stresses in the tunnel periphery (Pa) of 609 and 300 kPa were analyzed. These values were selected based on Equihua-Anguiano et al (2018). Figure 1 shows the employed nomenclature.…”

Section: Numerical Modelingmentioning

confidence: 99%